I'm sorry, perhaps it is my rhetoric that throws you off. A mathematical impossibility is different than a true impossibility. The chance of 1 in 10^50 is a mathematical impossibility, and different than a mechanical impossibility (the ability for an unaided human to--lets say--fly like birds). Obviously we know that life is not a mechanical impossibility, for we exist. However, it has been shown to be a mathematical impossibility. It is so improbable that it becomes increasingly unlikely.
As for the Bible codes, certain groups of words predict such things as the "Wright Brothers", "Airplane", and "at Kittyhawk". A clever man never would have been able to predict this, for it is a, how do you say, "mathematical impossibility". To add this in conjucnction with many other predictions of the future such as the assassination of Israeli Prime Minister Yitzhak Rabin in 1995, these codes truley become a mathematical impossibility. They are obviously possible (they exist!) but mathematically they should not.
So you can see why a man such as "da Vinci" (Which really means "from the town of Vinci", not the man) could never had predicted of formulated such happenings.
~Beowulf